Struct CompactionResult 

pub struct CompactionResult {
    pub summary: String,
    pub short_summary: Option<String>,
    pub trigger: CompactTrigger,
    pub tokens_before: u64,
    pub tokens_after: Option<u64>,
    pub messages_compacted: usize,
    pub messages_kept: usize,
    pub success: bool,
}

压缩执行结果 — 一次压缩操作完成后的数据。

由 katu-agent 层的压缩逻辑产出，用于：

• AgentEvent::CompactionEnded 事件
• 持久化到 session 历史
• UI 展示压缩效果

Examples

use katu_core::compaction::{CompactionResult, CompactTrigger};

let result = CompactionResult {
    summary: "User asked about Rust ownership...".into(),
    short_summary: Some("Discussed Rust ownership".into()),
    trigger: CompactTrigger::Auto,
    tokens_before: 150_000,
    tokens_after: Some(5_000),
    messages_compacted: 42,
    messages_kept: 8,
    success: true,
};
assert!(result.success);

Fields

summary: String

压缩生成的完整摘要文本。

short_summary: Option<String>

短摘要（用于 UI 显示，类似 PR title）。

来源: oh-my-pi shortSummary。

trigger: CompactTrigger

触发原因。

tokens_before: u64

压缩前的 prompt token 数。

tokens_after: Option<u64>

压缩后的估计 token 数。

None = 未测量。

messages_compacted: usize

被压缩掉的消息数。

messages_kept: usize

保留不变的消息数（recent turns）。

success: bool

是否成功。

false 时 summary 可能包含错误信息。

Implementations

impl CompactionResult

pub fn tokens_saved(&self) -> Option<u64>

计算节省的 token 数。

pub fn compression_ratio(&self) -> Option<f64>

计算压缩比 (0.0 ~ 1.0)。

0.0 = 完全没减少，1.0 = 全部压缩掉。

Trait Implementations

impl Clone for CompactionResult

fn clone(&self) -> CompactionResult

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CompactionResult

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CompactionResult

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for CompactionResult

fn eq(&self, other: &CompactionResult) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for CompactionResult

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for CompactionResult